Friction spring draft-rigging.



PATENTED FEB. 14, 1905.

P. N. MOORE. FRICTION SPRING DRAFT RIGGING.

APPLICATION FILED SEPT. B. 1904.

2 SHEETS-SHEET 1.

WITNESS/i5:

PATENTED FEB. 14, 1905.

` P. N. MOORE. PRIGTION SPRING DRAFT RIGGING.

APPLICATION FILED SEPT.8. 1904.

2 SHEETS-SHEET 2.

Patented February 14, 1905.

PATENT OEEICE.

PETER N. MOORE, OF MILWAUKEE, WISCONSIN.

FRICTION SPRING DRAFT-RIGGlNG.

SPECIFICATION forming part of Letters Patent No. 782,792, dated February14, 1905.

Application filed September 8, 1904. Serial No. 223,718.

To all whom, t may concern.-

Beit known that I, PETER N. MOORE, a citi- Zen of the United States,residing in Milwaukee, in the county of Milwaukee and State ofWisconsin, haveinvented a new and useful Improvement in Friction SpringDraft-Rigging, of which the following is a specification.

My invention relates to improvements in friction spring' draft-rigging'for railway-cars.

The object of my invention is to provide a friction spring' draftrigging of a simple, strong, efficient, and durable construction whichwill exert a great frictional resistance in connection with adirect-acting spring resistance longitudinally1 arranged in the line ofdraft.

My invention consists, in connection 'with the draw-bar, draw-bar strapor extension, side plates or stop-castings, longitudinally-arrangedspring and followers, of a sliding friction-shell provided with afriction divisionplate dividing it or the friction portion thereof intocompartments, a plurality of sliding friction-blocks in each compartmentof the sliding friction-shell, and Wedge blocks or caps for spreadingthe sliding friction-blocks and causing them to frictionally engage thefriction-shell and its division-plate.

My invention also consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownor described.

In the accompanying drawings, forming a part of this specification,Figure 1 is a central vertical longitudinal section of a friction springdraft-rigging embodying my invention. Fig'. '2 is a horizontal section.Fig. 3 is a partial cross-section on line 3 3 of Fig. 2. Eig. 4 is adetail perspective view of the division-plate. Eig. 5 is a perspectiveview of one of the sliding friction-blocks in each compartment of theshell, and Fig. 6 is a detail perspective view of one of the wedge capsor blocks.

In the drawings, A represents the draftsills or center sills of a car;A', the front or cross sill; C, the coupler; B, the draw-bar; B', thedraw-bar extension or strap secured to the coupler draw-bar by bolts orrivets D D are the side plates or stop-castings having a front stop Zand rear stop d for the followers E E to abut against and upper guidesZ2 and lower guides cl3 for the followers to reciprocate on or between.The lower guides Z3 are in the form of separate remov- 55 able platessecured to the side plates or stopcastings D by a bolt d* to enable thedraftrigging to be removed and replaced.

F is a longitudinally-arranged direct-acting spring', there being alsopreferably-a small 60 spring'f nesting within it.

E is a spring seat-block interposed between the rear end of the springand the rear follower E.

Gr is a sliding friction shell preferably '65 square or rectangular incrosssection and having an interior friction-surface g. The slidingfriction-shell G is provided with feet or projections g' to rest andslide upon the lower guide Z3 of the side plates or stop-cast- 70 ings Dand with an internal shoulder or flange g2 at its rear end engaging ashoulder or flange f on the seat-block F to cause the slidingfriction-shell Gr to return to position when theV spring E expands afterbeing compressed. rIhe spring seat-block F also permits an initialcompression of the spring F both in pulling and bufling before the rearfollower engages the rear end of the friction-shell G.

G is a friction division-plate mounted, pref- 8O erably, diagonally inthe friction-shell G and dividing the same into two triangular frictioncompartments or chambers.

H H are a pair of sliding friction-blocks mounted to slide in each ofthe friction chambers or compartments of thel friction-shell and having'friction-faces z, adapted to frictionally engage the friction-faces g ofthe frictionshell G and the friction-surface g3 of the division-plateG'. Each of these sliding fric- 90 tion-blocks H is also furnished withoppositely-directed wedge faces or inclines It 7b2, which are engaged bythe wedge faces or inclines m n of the wedge-blocks or wedge-caps M N.rIhe front wedge cap or block M bears against or receives pressure fromthe front follower E, and the rear wedge block or cap N abuts against orreceives pressure from the spring I?. The wedg'e-cap M has a slot or andthe wedg'e-cap N has a correspondingslot or open space n. The frictiondivision-plate (ir is removably secured in the friction-shell Gr by pinsy", extending through the adjacent corners of the friction-shell (ir.

The operation is as follows: In bulling, the front follower, wedge-capM, and sliding' friction-blocks H move with the draw-bar, while the rearfollower andthe friction-shell G and division-plate Gr are heldstationary afterthe initial compression of the spring F has taken place,thus causing' a powerful frictional resistance to be produced betweenthe sliding friction-blocks and the friction-shell and itsdivision-plate. In pulling', the operation is the same but the reverse,the front follower now being' held stationary and the rear follower,friction-shell, and its division-plate moving' with the d raw-bar afterthe initial compression of the spring' F.

I claim l. In a friction spring' draft-rigging, the combination with thedraw-bar, draw-bar extension, side plates or stop-castings, directactingspring and followers, of a sliding' friction-shell having an interiorfriction-surface, a friction 'division-plate dividing the frictionshellinto friction chambers or compartments,

' a plurality of sliding friction-blocks in each chamber or compartmentof said friction-shell, having' friction-surfaces in sliding' frictionaleng'ag'ement with the friction-surfaces of the shell and itsdivision-plate, and provided with wedg'e faces or inclines, and wedgecaps or blocks, substantially as specified.

2. In a friction spring draft-rigging, the combination with thedraw-bar, draw-bar extension, side plates or stop-castings, directactingspring' and followers, of a sliding' friction-shell having' an interiorfriction-surface, a friction division-plate dividing' the frictionshellinto friction chambers or compartments, a plurality of sliding'friction-blocks in each chamber or compartment of said friction -shell,having friction-surfaces in sliding' frictional engag'ement with thefriction-surfaces of the shell and its division-plate, and provided withwedg'e faces or inclines, and wedge caps or blocks, said wedge caps orblocks having' slots or open spaces to receive said division-plate,substantially as specified.

In a friction spring' draft-rigging, the combination with the draw-bar,draw-bar eX- tension, side plates or stop-castings, directacting springand followers, of a sliding' friction-shell having an interiorfriction-surface, a friction division-plate dividing the :frictionshellinto friction chambers or compartments, a plurality of slidingfriction-blocks in each chamber or compartment of said friction-shell,having friction-surfaces in sliding` frictional engagement with thefriction-surfaces of the shell and its division-plate, and provided withwedge faces or inclines and wedge caps o1' blocks, and a spring'seat-block interposed between said friction-shell and one of thefollowers, substantially as specilied.

4. In a friction spring' draft-rigging, the combination with alongitudinally-arranged spring' and followers,of a slidingfriction-shell, a friction division-plate inside the shell dividing itinto vfriction chambers or compartments, and a plurality of slidingfriction-blocks in each friction chamber or compartment of the shell,substantially as specified.

5. In a friction spring draft-rig'ging', the combination with alongitudinally-arranged spring and followers, of a slidingfriction-shell, a friction division-plate inside the shell dividingitinto friction chambers or compartments, and a plurality of sliding'friction-blocks in each friction chamber or compartment of the shell,and a wedge block or cap for forcing the friction blocks into frictionalengagement with the friction-surfaces of the shell and division-plate,substantially as specified.

6. In a friction spring draft-rigging, the combination with alongitudinal-ly-arranged spring and followers,of a sliding'friction-shell, a friction division-plate inside the shell dividing' itinto friction chambers or compartments, and a plurality of slidingfriction-blocks in each friction chamber or compartment of the shell,and a wedge block or cap for forcing the frictionblocks into frictionalengagement with the friction-surfaces of the shell and division-plate,and a seat-block interposed between the spring and one of the followers,substantially as specified.

7. In a friction spring' draft-rigging, the combination with alongitudinally-arranged spring' and followers, of a rectangular slidingfriction-shell, a division-plate extending' diagonally across the shelland dividing' it into two triang'ular friction-chambers and triangularsliding' friction-blocks in each of said cham-y bers, substantially asspecified.

8. In a friction spring' draft-rigging, the combination with alongitudinally-arranged spring' and followers, of a rectangular slidingfriction-shell, a division-plate extending' diagonally across the shelland dividing' it into two triangular friction-chambers and triangularsliding' friction-blocks in each of said chambers, provided with wedgefaces or inclines, substantially as specified.

9. In a friction spring draft-rigging', the combination with along'itudinally-arrang'ed spring and followers, of a rectangular slidingfriction-shell, a division-plate extending' diag'onally across the shelland dividing it into two triangular friction-chambers and triangularsliding friction-blocks in each of said chambers, provided with wedgefaces or inclines, and a wedge block or cap eng'aging' the wedge facesor inclines of said sliding' friction-blocks, substantially asspecified.

10. In a friction spring draft-rigging', the

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combination with a longitudinally-arranged spring and followers, of arectangular sliding friction-shell, a division-plate extendingdiagonally across the shell and dividing it into two triangularfriction-chambers and triangular sliding friction-blocks in each of saidchambers, provided with wedge faces or inclines, and a wedge block orcap engaging the wedge faces or inclines of said slidingfriction-blocks, and a seat-block interposed between the spring and oneof the followers, substantially as specified.

11. In a friction spring draft-rigging, the combination with alongitudinally-arranged spring and followers, of a rectangular slidingfriction-shell, a division-plate dividing it into triangular chambers,triangular sliding friction-blocks in each of said chambers, furnishedwith wedge faces or inclines and wedge blocks specified.

PETER N. MOORE. Witnesses:

PEARL ABRAMs, VVILLrAM A. GEIGER.

